Since testing organic coatings under natural conditions is a time‐consuming process, accelerated methods are needed to produce results in less time. A simulated environment cannot fully reproduce actual operating conditions, so it is important to investigate the correlation between accelerated and natural aging test results. In this article, the natural aging of painted steel, aluminum, and hot‐dip galvanized steel is studied for 1 year under continental climate conditions. The environmental parameters responsible for the change of the protective system in a continental urban environment were monitored: time of wetness, ultraviolet radiation, and temperature. The extent of deterioration is compared with similar samples weathered by accelerated testing using electrochemical impedance spectroscopy, differential scanning calorimetry, and gloss measurements. Neutral salt spray chamber, prohesion test, immersion in a quiescent salt solution, and ultraviolet B‐rays (UVB) exposure test are considered. The results of the accelerated cabinet tests are discussed, and the effect is evaluated for the various coated metals. This study highlights the major problems encountered in building a model to predict durability in such a critical area as the durability of organic coatings for metal structures.

Comparative study between natural and artificial weathering of acrylic‐coated steel, aluminum, and galvanized steel / Cristoforetti, Andrea; Rossi, Stefano; Deflorian, Flavio; Fedel, Michele. - In: MATERIALS AND CORROSION. - ISSN 0947-5117. - STAMPA. - 2023:(2023), pp. 1-10. [10.1002/maco.202313858]

Comparative study between natural and artificial weathering of acrylic‐coated steel, aluminum, and galvanized steel

Cristoforetti, Andrea;Rossi, Stefano;Deflorian, Flavio;Fedel, Michele
2023-01-01

Abstract

Since testing organic coatings under natural conditions is a time‐consuming process, accelerated methods are needed to produce results in less time. A simulated environment cannot fully reproduce actual operating conditions, so it is important to investigate the correlation between accelerated and natural aging test results. In this article, the natural aging of painted steel, aluminum, and hot‐dip galvanized steel is studied for 1 year under continental climate conditions. The environmental parameters responsible for the change of the protective system in a continental urban environment were monitored: time of wetness, ultraviolet radiation, and temperature. The extent of deterioration is compared with similar samples weathered by accelerated testing using electrochemical impedance spectroscopy, differential scanning calorimetry, and gloss measurements. Neutral salt spray chamber, prohesion test, immersion in a quiescent salt solution, and ultraviolet B‐rays (UVB) exposure test are considered. The results of the accelerated cabinet tests are discussed, and the effect is evaluated for the various coated metals. This study highlights the major problems encountered in building a model to predict durability in such a critical area as the durability of organic coatings for metal structures.
2023
Cristoforetti, Andrea; Rossi, Stefano; Deflorian, Flavio; Fedel, Michele
Comparative study between natural and artificial weathering of acrylic‐coated steel, aluminum, and galvanized steel / Cristoforetti, Andrea; Rossi, Stefano; Deflorian, Flavio; Fedel, Michele. - In: MATERIALS AND CORROSION. - ISSN 0947-5117. - STAMPA. - 2023:(2023), pp. 1-10. [10.1002/maco.202313858]
File in questo prodotto:
File Dimensione Formato  
Materials Corrosion - 2023 - Cristoforetti -.pdf

accesso aperto

Tipologia: Versione editoriale (Publisher’s layout)
Licenza: Creative commons
Dimensione 1.77 MB
Formato Adobe PDF
1.77 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/380789
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 4
  • ???jsp.display-item.citation.isi??? 3
social impact